RCS is shit. It’s a good idea in theory, but in practice it’s a crappy, over-engineered clone of iMessage or WhatsApp without any of the good parts like end to end encryption or spam protections. It relies on the carriers to keep it functional and we all know this won’t end well... given the robocall and SMS spam situation do you really think RCS will be any different? But at least robocalls and SMS spam cant carry a…
And as has been said in other threads, Google Talk was the only sane strategy for Google and it was lost.